The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2000
Filed:
Jul. 01, 1998
Hiroyuki Tanaka, Minami-Ashigara, JP;
Kazufumi Tomita, Minami-Ashigara, JP;
Hirotaka Matsuoka, Minami-Ashigara, JP;
Seiichi Takagi, Minami-Ashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A colorant in a toner comprising a binder resin and a colorant is dispersed by a dispersant polymer having an acid value of from 1 mgKOH/g or more to 27 mgKOH/g or less and an amine value of from 1 or more to 100 or less. Thus, dispersibility of the colorant in the toner is improved, so as to obtain a negatively chargeable toner for electrophotography having excellent chargeability, storage ability, color developability, and light transmittance through OHP transparencies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile